Food Webs
Rose → aphid → ladybird. In this food chain, the ladybird is the secondary consumer.

Food Webs

This KS2 Science quiz is all about food webs. Food webs, also called food chains, show us how energy is transferred from one organism to another by eating, or consuming.

Food webs are cycles of what eats what. All living things, plants and animals, need energy in order to survive. Plants (like grass for example) create energy from sunlight by photosynthesis. This is then transferred to herbivores (like rabbits) which eat the plants. Predators (such as foxes) then eat the herbivores and the energy is transferred once more. These transfers of energy are what we call food chains.

What type of food do different organisms need and where do they find it? What type of food supports all life on Earth? What are the differences between producers and consumers. Test your knowledge of food chains and food webs with this quiz.

In a food web, secondary consumers eat the primary consumers, or herbivores. Which one of these is a secondary consumer?
Caterpillars, rabbits and cows are all herbivores and so primary consumers
What must be at the beginning of every food chain?
A herbivore
A green plant
A decomposer
An omnivore
Plants always come at the beginning of a food chain, which is why they are known as producers - only plants can turn sunlight into food
Which consumers eat only plants?
Other plants
Herbivores are called primary consumers because they are able to gain all their energy through digesting plants
In a food web, green plants are known as producers. Why is this?
Because plants are not carnivores
Because plants are the most efficient at transferring energy
Because plants create their own food from sunlight
Because plants are inefficient at transferring energy
Plants use photosynthesis to convert sunlight into food
Which of these species is a producer?
Polar bear
Producers are always green plants
Rose → aphid → ladybird. In this food chain, what is the ladybird?
The producer
A decomposer
The secondary consumer
The primary consumer
The rose is the producer, the aphid is the primary consumer and the ladybird is the secondary consumer
Which of these food chains is in the right order?
Shrimp → algae → cod → seal → polar bear
Algae → cod → shrimp → seal → polar bear
Polar bear → seal → cod → shrimp → algae
Algae → shrimp → cod → seal → polar bear
Arrows show the way in which energy is moving
What does a decomposer do in a food web?
They provide food for herbivores
They recycle nutrients by feeding on dead and decaying materials
They convert energy from sunlight into food
They create soil
Decomposers include earthworms, woodlice, fungi and bacteria, and represent the end of any food web because they feed on dead organisms
Which of the following support all life on Earth?
Green plants
Because plants create their own food from sunlight, using photosynthesis, they are the only means of transferring energy from the Sun to all life on Earth
What is an omnivore?
An omnivore eats only green plants
An omnivore is a top carnivore
An omnivore eats both plants and animals
An omnivore is a decomposer
Humans are omnivores
You can find more about this topic by visiting BBC Bitesize - What is a food chain?

Author:  Sheri Smith

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